Ground-clamp.



claim.

.in S

`'waarnaar n. HIGGINS, or rnrLAnnLPi-im,rENNsYLvAma GRoUND-GLAMP.

meneer.

Application mefi'xune i7,

To all whom it may concern; i A l Beit knownthat I, WILLIA 1 I-I. HIGGINS, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia"l and State of Pennsylvania,A have invented certain new and useful Improvements in- Ground-Clamps, of which the following is a specification. i

My invention relates to improvements in*4 ground clamps, and more particularly to an improved' device which 'is adapted to be clamped around apipe and operate as a grounding device for electric currents,4 the object of the invention being to provide a simple, inexpensivedevice of this character which will fit various sizes of pipes, and which will efficiently clamp upon any pipe around which it can be positioned.

A further object is to provide a device of this character which may be manufactured and sold at an extremely loi poses intended.

"Vith these and other objects in view, the inventionconsists in certain novel features of construction and combinations and ar-- rangements of parts as Will be more fully hereinafter described and pointed out in the In the accompanying drawings: Figure lI is a plan View illustrating myimproved device. "Fig 2 is an edge View of Fig. l, and F ig. 3 is a view in elevation illustrating my improved device in position on apipe.

My improved ground clamp comprises a e flat strip l which may be of lcopper or anyl other suitable metal. One end of this -Strlp is provided With a hookv 2 for the reception` of an electric Wire 3. A rectangular preferably oblong nut -4 is secured by rivets 5 to the strip 1 adjacent its hooked end 2, and said strip is provided with an opening 6 registering With the opening-inthe nut for ltliel reception of a clamping bolt 7. Onthe bolt 7, an angular washer 8 conforming 1n shape to nut 4 is loosely positioned, andsaid bolt is provided With a screw-driver receiving head 9 as clearly shown. The strip Y1,throughout a portion of its length, is provided with a plurality of holes 'l0 adapted to receivein any of them the bolt 7 in accordance with the diameter of the pipe 1 1 on which the ground cla-mp is secured.

In operation, the bolt 7 is removed from nut 4 and strip l is bent around the pipe l1.

o specification of Letters Patent. s

. {fatented-J une 13, 1916. 1913.' serial-Nwiaa.

Bolt `7 \s-then projected through washer f8 and through the properopening 10 in strip y/laI-1\ol-.-.\1s screwed through nut 4.

\ Asseen most clearly in Fig. 3, the washer`` 8 and the 4nut 4 are located in parallelism and both With their edges in proximity to the pipe 1 1, -so that the clamping action of bolt 7 coinpels a' uniform bending-of the stripto securelyolamparound the pipe Withnt any twisting or torsional strain upon the ripe After the properadjustment is had, onegend of the' strip may be bent back as shown at l2 and the device is ready for use in connection with any desired electric circuit. Various slight changes might be made in the general form and arrangement of parts described Without `departing from :my invention, and hence I d'0 not limit myself to the precise details set forth, but consider price, and l\ myself at libertyto make such changes-and alterations as fairly fall within the spirit 'and scope of the appended claim.

Having ,thus described my inventiomwhat 4I claim as new and desire to secure by Letters Patent is :l

A ground clamp comprising a strip o metal of the same -Width and thickness throughout its length and bent at lone end forming a hook, said strip adapted to vbe bent between its ends around a pipe, a nut fixed to the strip on its outer side at a point removed from the hooked end, said nut of a jvidth' corresponding to the width of the strip, said strip having an opening therein registering with the screw-threaded. opening in the nuta second `nutA corresponding in name to this specification in the presence of two subscribing `Witnesses. WILLIAM H.. HIGGINS. lVitnesses M. E. Dirrns, CHAs. E. Porrs. 

